Universal joint.



No.= 731,495. PATENTBD JUNE 23, 1903- A. POIDATZ. UNIVERSAL JOINT.

APJLIOATION IfLED FEB. 5. 1903. NOYMODEL.

Fig.1. A

UNITED STATES Patented June 23, 1903i NOUVELLE DES ETABLISSEMENTS DECAUVILLE ATNF, OF PARlSpFRANOE.

UNIVERSAL JOINT,

SPECIFICATION forming part of Letters Patent N 0. 731,495, dated June 23, 1903. Application filed February 5,1903. $erial No. 142,021. (No model.)

To aZZ whom it may concern:

Be it known that I, ALFRED POIDATZ, a citizen of the Republic of France, residing at Paris, France, have invented certain new and useful Improvements in or Relating to Universal Joints, of which the following is a specification.

The universal joint according to this in vention is applicable generally, but is intended more particularly for use in transmitting motion in motor-cars.

A universal joint according to this invention is illustrated by way of example in the accompanying drawings.

Figure 1 is a longitudinal section, Fig. 2 is an end view in vertical cross-section on the line A B of Fig. 1, and Fig. 3 is a side elevation.

The joint is chiefly constituted by the combination of two exactly similar heads a Z) with external semispherical surface and provided with diametrically opposite trunnions c, the axis of each set of two trunnions act the heads a and I) being arranged in the same plane normally to each other. These parts are articulated in bearings 02, supporting the trunnions c, and the Whole is connected by means of two semispherical cases or covers 6 f, inclosing the said bearings 01 and strongly bolted together and forming, in combination with the two heads a b, a tightly-closed tank for lubricating material, which is always closed whatever be theangle formed during working by the two shafts 11 which are connected by the said universal joint for the purpose of transmitting the movement from one to the other. The lubricating material is introduced through a passage 9, formed in one of the faces of the casing e f. The passage g is closed by a screw-plug h. Lubrication is effected automatically, owing to the oil being projected directly on the trunnions c of the heads a b, as well as on the surfaces in contact, bylthe centrifugal force resulting from the rotation of the whole of the device,

What I claim as my invention, and desire to secure by Letters Patent, is

1. A universal joint particularly intended for the transmission of movement in motorcars, comprising two heads provided with trunnions and with semispherical outside surfaces, one set of trunnions being arranged at right angles to the other, bearings for the trunnions and two semispherical casings connecting the said heads and inclosing the bearings of their trunnions c and with the heads forming a lubricant-reservoir substantially as described.

2. A universal joint comprising two oppositely-arranged shaftbearing heads with semispherical outer surfaces trunnions on one head arranged at right angles to trunnions on the other head, journals for said trunnions, and atwo-part closing semispherical casing securing the heads together substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ALFRED POIDATZ.

Witnesses:

L0UIs SULLIGER, AUGUSTUS E. INGRAM. 

